Answer:
Variable manufacturing overhead rate variance= $10,947 favorable
Explanation:
To calculate the variable overhead rate variance, we need to use the following formula:
Variable manufacturing overhead rate variance= (standard rate - actual rate)* standard quantity
Standard rate= $1.7 per machine-hout
Actual rate= (123,642/79,100)= $1.563
Standard quantity= (8,700*0.1)= 79,170 hours
Variable manufacturing overhead rate variance= 1.7*79,170 - 123,642
Variable manufacturing overhead rate variance= 134,589 - 123,642
Variable manufacturing overhead rate variance= $10,947 favorable